For turbulent flow, Reynolds number is correlated with power number as (where K, a constant which depends on the container geometry and shape of stirrer; Rei, is Reynolds number for agitator; Di, stirrer diameter and N, stirrer speed)
Options
A. Np = K(Rei)-1
B. Np = N2Di(Rei)-1
C. Np = K
D. Can't be correlated
Correct Answer
Np = K
Agitation and Aeration problems
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1. In a two-phase system where the continuous phase remains in place, the gas hold up can be expressed as (where Vs and Vt are the superficial gas velocity and bubble rise velocity)